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A map analysis is a study regarding map types, i.e. political maps, military maps, contour lines etc., and the unique physical qualities of a map, [1] i.e. scale, title, legend etc. It is also a way of decoding the message and symbols of the map and placing it within its proper spatial and cultural context, as well as identifying changes in ...
Paper maps, which have been digitized for many years as a data source, can also be of widely varying quality. A quantitative analysis of maps brings accuracy issues into focus. The electronic and other equipment used to make measurements for GIS is far more precise than the machines of conventional map analysis.
The basic data is overlaid with graphic styles (e.g. colour shades, hatch patterns) to display information on a more sophisticated level. For example, population density between urban and rural areas may show the cities in deep red (to indicate a high ratio of inhabitants per square mile), while showing remote areas in very pale red (to ...
Geospatial PDF is a set of geospatial extensions to the Portable Document Format (PDF) 1.7 specification to include information that relates a region in the document page to a region in physical space — called georeferencing. [1] A geospatial PDF can contain geometry such as points, lines, and polygons.
Geographic analytics starts with the visualization of basic data on a map. By involving experts from the field, the visualization is then being used in order to determine framing conditions and focal points of the business problem. As a result, the solution space, i.e. the number of possible solutions of the data analysis, is being reduced.
A cartogram (also called a value-area map or an anamorphic map, the latter common among German-speakers) is a thematic map of a set of features (countries, provinces, etc.), in which their geographic size is altered to be directly proportional to a selected variable, such as travel time, population, or gross national income. Geographic space ...
The Odyssey project's aim was to produce a vector GIS that provided spatial analysis of many different forms within a single system. As of 1980, in addition to early Odyssey modules, the Laboratory sold the following programs for display and analysis of spatial data [11] ASPEX - 3d data perspectives; CALFORM - shaded vector maps;
Maps serve a wide variety of purposes; they may be descriptive (showing the accurate location of geographic features to be used in a variety of ways, like a street map), exploratory (showing the distribution of phenomena and their properties, to look for underlying patterns and processes, like many thematic maps), explanatory (educating the ...